Abstract
ABSTRACT A cost effectiveness analysis was performed for equipment, materials and techniques applicable to the removal or dispersal of spilled oil from U.S. Navy oilers and gasoline tankers on open waters. Effectiveness parameters included oil product types (JP-5, Distillate Fule, Navy Special and Bunker C), a range of spill locations (3 and 12 miles from shore) and varying spill sizes (2,700 gal, 270,000 gal, and 6,750,000 gal). Criteria for evaluation of systems under the above parameter situations, formulated for presently available equipment and materials, included: completeness of oil removal; rate of removal; hazard and pollution; use in limited access areas; sensitivity to expected environmental factors; sensitivity to temperature extremes; toxicity to marine life; and system availability. Cost effectiveness was determined using the 3 spill sizes and checked for spill frequency sensitivity, The three most cost effective systems for the range of spill sizes were found to be burning, dispersing, and mechanical skimming. Considering system applicability to avrious products and the requirements of rate of removal for massive spills, the most practical universal system with a favorable cost effectiveness ratio was found to be dispersing. This is followed by dispersing plus a containment boom. Burning agents applied directly to the spill were judged to be the third best system based on its favorable cost effectiveness but limited applicability to oil types and permissible burning circumstances.
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